This card puts the refrigerator in defrost mode after 8 hours of operation. It defrosts for 20 minutes. It can be used instead of a mechanical defrost timer. It has a longer life and is more efficient.

By pressing the test button, the defrost process starts immediately, the LED lights up and a beep is heard from the buzzer.

Reset button resets the processor in case of abnormal operation of the circuit.

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